Enoch Robinson & Willam Hall: “Latch of Door and Other Locks” U.S. Patent No. 1995 1841 E. Robinson & Co., Manufacturer
Enoch Robinson & Willam Hall: “Window-Fastening” U.S. Patent No. 2248 1841 E. Robinson & Co., Manufacturer
1843 William Hall leaves E. Robinson & Co.; founds Wm. Hall & Co., 27 Dock Square, Boston, Mass.
1847 MCMA Exhibition at Faneuil and Quincy Halls, Boston. Among the exhibitors are Enoch Robinson, William Hall, and George B. Lothrop.
1875 William Hall dies in Cohasset, Mass., leaving Wm. Hall & Co to his sons William F., Henry, and Fred.